/// <summary>
/// Visit this node and its children.
/// </summary>
/// <param name="visitor">Visitor to invoke methods on when visiting the nodes.</param>
public void Visit(ILibraryNodeVisitor visitor, CancellationToken ct = default(CancellationToken))
{
if (ct.IsCancellationRequested)
{
visitor.LeaveNode(this, ct);
return;
}
if (visitor.EnterNode(this, ct))
{
lock (Children) {
foreach (var child in Children)
{
if (ct.IsCancellationRequested)
{
visitor.LeaveNode(this, ct);
return;
}
child.Visit(visitor, ct);
}
}
}
visitor.LeaveNode(this, ct);
}
public void VisitNodes(ILibraryNodeVisitor visitor, CancellationToken ct = default(CancellationToken))
{
lock (this)
{
this._root.Visit(visitor, ct);
}
}
internal async Task VisitNodesAsync(ILibraryNodeVisitor visitor, CancellationToken ct = default(CancellationToken))
{
await _searching.WaitAsync();
try {
await Task.Run(() => _root.Visit(visitor, ct));
ApplyUpdates(true);
} finally {
_searching.Release();
}
}
public void VisitNodes(ILibraryNodeVisitor visitor, CancellationToken ct = default(CancellationToken)) {
lock (this) {
_root.Visit(visitor, ct);
}
}
internal async Task VisitNodesAsync(ILibraryNodeVisitor visitor, CancellationToken ct = default(CancellationToken)) {
await _searching.WaitAsync();
try {
await Task.Run(() => _root.Visit(visitor, ct));
ApplyUpdates(true);
} finally {
_searching.Release();
}
}
